Is there anything that helps reverse or halt corrosion on wiring .. I hear about a spray called corrosion x . Thanks

Corrosion in and on internal wires only adds a bunch of resistance - in return this heats up the wiring and what connected to. If all possible you could make proper splices or will have to replace/. Also as the wire corrodes it get thinner - the thinner the proper recommend gauge wire becomes the more resistance is produces along with heat..

Corrosion X is fantastic but if your wires are already corroded they need to be replaced.

The dielectric grease general motors used to put out for service in the cadillac line is some of t
he best i have seen . Dont smoke a cig after handling or you will be one sick mo fo .
for smaller connectors or applications the new brown dielectric is the way to go . The gm pasty stuff will stand up to powerwashing ect the brown wont .

Sounds like your app though calls for a ziplock freezer bag and fresh can of cocacola